197939040 has 96 divisors (see below), whose sum is σ = 671491296. Its totient is φ = 48721920.

The previous prime is 197939033. The next prime is 197939057. The reversal of 197939040 is 40939791.

197939040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×197939040² = 78359727112243200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 197938983 and 197939001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9621 + ... + 22100.

It is an arithmetic number, because the mean of its divisors is an integer number (6994701).

Almost surely, 2^197939040 is an apocalyptic number.

197939040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197939040 is an abundant number, since it is smaller than the sum of its proper divisors (473552256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197939040 is a wasteful number, since it uses less digits than its factorization.

197939040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31752 (or 31744 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 197939040 is about 14069.0809934409. The cubic root of 197939040 is about 582.7878467076.

The spelling of 197939040 in words is "one hundred ninety-seven million, nine hundred thirty-nine thousand, forty".